dye|World dye variety

Name:C.I.Direct Brown 67,C.I.26230

Molecular Structure: Double azo class

C.I.Direct Brown 67,C.I.26230,CAS 8006-00-6,518.52,Cotton Brown A

Molecular Formula:

Molecular Weight: 518.52

CAS Registry Number:8006-00-6

Manufacturing Methods : 4-Aminonaphthalene-1-sulfonic acid (90%), 8-Aminonaphthalene-2-sulfonic acid (10%) diazo, and Naphthalen-1-amine coupling, product to diazo, and Benzene-1,3-diamine coupling.

Properties and Applications: Red light brown. Soluble in water for orange brown, slightly soluble in ethanol for yellow orange brown. The strong sulfuric acid for dark blue black, diluted for brown. The dye solution with strong hydrochloric acid with brown precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

List of Suppliers:

Cotton Brown A( IG Farbenindustrie AG )